It's a scene movie directors would pay millions to create: a 10,000-foot-tall dust cloud advancing over a city, swallowing it whole. That was the reality in Phoenix last night, as a massive dust storm swept over the city like a wave, reports the AP. Radar data showed that the dust wall stretched up to two miles in height at times, born of an afternoon storm in the Tucson area. The Phoenix airport was shut down for an hour due to low visibility; and strong winds took down trees, leaving thousands without power. (More Phoenix stories.)